Machine guard



July 29, 1952 F. szYPuLlNsKl V2,604,823

MACHINE GUARD Filed April 19, 1946 IN! 'EN' TOR.

Patented July 29, 1952 ,OFFICE MACHINE GUARD Frank Szypulinski,Milwaukee, Wis. Application April 19, 1946, Serial No. 663,293

2 Claims. 1

My invention relates to guards, and more particularly to a type of guardthat may be attached to a machine tool for the operators safety.

The object of my -invention is to provide a device of this type thatwill enable the operator to increase production because of his abilityto guard himself against fast revolving cutters or the like while thework is being changed.

Another object of my invention is to provide a guard that will protectthe operator against splashing of the lubricant directed onto the fastrevolving cutter tool.

Still another object of my invention is to provide a device that willenable the operator to direct a steady flow of lubricant onto the cutterproviding sufficient lubrication, yet not having to retard the flowwhile the cutter is brought to a stop during the operation of changingthe work in the work holder.

Still another object of my invention is to so construct the support forthe guard as to enable it to be adjustably positioned during the workingoperation as well as the changing operation without any mechanicalchange in the device.

Other and further objects of my invention will become more apparent asthe description proceeds when taken in conjunctio-n with the drawing, inwhich:

Figure 1 is a fragmentary side View of a ma chine tool showing aheadstock and a slidably mounted tool support, the tool support havingthe guard assembly mounted thereon.

Figure 2 is a plan View of the guard assembly.

Figure 3 is a side view of the guard assembly as shown in Figure 2, andillustrating the adjustable feature shown in dotted lines.

Figure 4 is a perspective view of the device in a retracted position.

Similar characters of reference indicate corresponding parts throughoutthe several views, and referring now to the same, character I6 shows aguard member attached by means of rivets or bolts at II to a horizontalmember I2, forming a part of the entire assembly with the member I2. Themember I2 is hingedly supported to a bracket I6 at I1 and the bracket I6is attached to the tool support I9 by means of screws I8. There aresliding supports I3 and I3 encircling the arms I2 and I2', the supportI3 being attached to the arm I2 at I4, and the sliding support I3' isattached to the arm I2 at I5. This permits extending the arms I2 and I2outward, or retracting them, depending on the position of the guard I9,and when the cutter or tool, shown as 26 in Figure 1, engages theworkpiece 23, held by the work holder 22 onto the headstock 2 I, theguard is raised, as shown in dotted lines in Figure 1. This will permitthe guard to be out Vof the way while the tool is functioning, and to bedisposed downwardly, as shown in Figure 1, covering the revolving tool20, while the work is being replaced in the work holder 22. Obviously,it takes time to stop the cutter or tool from revolving, and the steadystream of lubricant that is directed to the cutter need not be retardedor lessened when theV tool is retrieved away from the work.

The arm I2 rests on a support 24, forming an integral part of thebracket I6, when the guard is in a downward position.

It is manifest to anyone familiar with the art that machine tools aredesigned for speed in production and time is a very definite element andfactor to be considered. When the tool is backed away from theworkpiece, it is necessary for the operator to be protected against therevolving tool and the spray of the lubricant, while he removes theworkpiece from the chuck and replaces it with another workpiece to bemachined. Without the use of this type of guard. the operator would haveto wait for the tool to come to the point where it no longer revolvesbefore he could attempt removal of the work from the holder. But by theuse of this type of guard, the guard will cover the revolving cutterwithout the operator waiting for it to stop.

While I have herein described a specific construction and shown itsmanner of use, I know that many changes and congurations of parts andelements may be made without departing from the operativeness of theinvention and the scope of the appendent claims, and I herein reservethe right to make such changes as are deemed necessary without affectingthe invention or the claims.

Having thus describedmy invention, what I claim and desire to secure byLetters Patent in the United States is:

1. A device of the character described comprising a hollow guard open atthe bottom and rear faces. an elongated arm secured to said hollowguard, a mounting bracket having an elongated arm hngedly connectedthereto and arranged in parallel relation to the arm of said hollowguard,

a support member connected to each of said arms 5 for slidableadjustment of said guard with respect to said mounting bracket.

2. The structure of claim 1 wherein the mounting bracket has a stopmember for engaging the arm hinged thereto for limiting downward move-10 ment of said guard.

FRANK SZYPULINSKI.

REFERENCES CITED The followingreferences are of'record inthe 15 file ofthis patent:

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